IMPACT OF DISPERSE PHASE ON HYDRAULIC RESISTANCE OF DISTRICT DEGASSING PIPELINES

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Geo-Technical Mechanics, 2014, Issue 114

UDC 622.817.47:621.644.8:533.1:532.55/.576

Author

L.A. Novikov, M.S. (Tech.)

(IGTM NAS of Ukraine)

Abstract.

The article presents dependences for coefficients of hydraulic resistance in the single-phase and two-phase media flowing in the pipelines. These dependences are proposed to use for estimating pressure loss in the methane-air mixture in the district degassing pipelines. It is shown that the flow of methane-air mixture containing suspended particles of water can be considered as a phase medium with dispersed, circular and dispersed-circular structure. It is stated that in presence of condensation on the walls of degassing pipeline pressure lost for friction is characterized by a coefficient of interphase friction value of which depends on thickness and relative rate of the liquid film flow. At the same time, local pressure loss depends on speed of the liquid dispersed phase, its volumetric content in the gas flow and nature of changed flow section of the pipeline.

Keywords:

coefficient of hydraulic friction, coefficient of local hydraulic resistance, liquid dispersed phase, degassing pipeline, methane-air mixture

References:

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About the author

Novikov Leonid Andreevich, Master of Science,Junior Researcherin Department of Mineral Mining at Great Depths, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM NAS of Ukraine), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.  

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